-Why are you still here? Everybody has gone to attend the lecture by the president.-Oh, I ____ about it!
You _____ across the road without looking round; you _____ down by a car.
–Did Ken take the job in the bookstore?–No, but I think he _____.
He _____ more than thirty.
A computer _____ think for itself; it must be told what to do.
You _____ to eat if you don’t feel like it.